Power-transmission device.



W. WARING.

POWER TRANSMISSION DEVICE.

APPLIUATION IILED OUT. 20, 1910.

988,607. Patented Apr. 4, 1911.

WILLIAM WARING, or eUfNoY, MASSACHUSETTS, assrenon ro NATIDNAL BRAKE &

G IIZU'JTCH qoMPANY, F BOSTON, MASSAC HUSETTS, A CORPORATION OF MAINE.

POWER-TRANSMISSION DEVICE.

To all whom it may concern: v

Be it known that 1, WILLIAM VVARING, 1,-

- citizen of the United States, residing in Quincy,

tion with the accompanying drawings, is a ferences.

specification, like letters on the drawings re resenting like parts.

Ihis invention relates to a power trans: mission device of that class in which a series of contacting members are attached to an II, endless belt and engage at their ends with 15 driving and driven members or disks.

The presedt invention has for its Ob'JECt to increase the efficiency of apparatus of the class described; and to render the same effective in the presence of oil, moisture, etc. To this end, the cdntacting members carried by the endless belt areprovided at their ends with one or more sockets into which are forced under compression inserts of cork, which are designed to contact with the driv 'ing and driven members, whereby the frictional engagement between the endless belt and the drivin and driven members is greatly increase and the driving power of the device is increased, and is unimpaired by the presence of oil, moisture, etc.

Figure 1 is a plan view of a power transmission device embodying this invention. Fig. 2, a. detail in section on an enlarged scale to be referred to. Fig. 8, a detail in side elevation of the endless conveyor, and Fig. 4, a modification to be referred to.

Referring to the drawings, a, represents an endless belt or band of leather, canvas or like material to which is secured a series of v blocks b-of wood or other suitable material by bolts 0, which are passed through the blocks 6 and through strips or bars d of wood or other suitable material which are located on the side of the belt a. opposite to the blocks b. The endless belt a with its attached blocks 2) acts to transmit power from a driving member to a driven member. The driving member consists of a pair of metal disks 10, 12, having hubs 14, 15, which are splined on a shaft 16 to rotate therewith and to slide thereon toward and from each other, said disks bein beveled or inclined outwardly from their ubs to their circum- The driven rnember consists of Specification of Letters Patent.

Patented Apr. 4, 1911.

. Application filed October 20, 1910. Serial No. 588,169.

like disks 20, 21, provided with hubs 22, 23, mounted on a shaft 24; to be driven and splincd thereon to be moved toward and from each other. The hubs 14, 22 have pivotally connected to them a lever 26, which is pivoted at 27 between said hubs, and the hubs 1,5, 23 have pivotally connected to them a lever 28. which is pivoted at 29, said. levers being connected together by a rod 30. The free ends of the levers 26, 28 are connected to an actuating rod 31, by means of which said lovers may be moved simultaneously to move the hubs 14, 15, in the opposite direction to that in which the hubs 22, 23 are moved and vice versa, so as to vary the speed of the driven member.

The blocks 5 are provided with inclined or beveled ends to conform to the bevel of the disks with which they coiiperate, and said ends may be provided with facing pieces of leather or other flexible, fibrous material, as shown in Figs. 2 and 3, or said facings may be omitted as shown in Fig. 4. The blocks 6 in either case are provided in their ends with one or more sockets 35 into which are inserted under compression one or more inserts 36 of cork, which are designed to make contact with the metal disks, and thereby increase the frictional contact of the blocks 7) with the disks. The cork in sert's may and perferably will be made slightly longer than the depth of the sockets, so that they project beyond the surface of the block and yieldingly engage the metal disks. By means of the cork inserts, the efiiciency of the endless belt for transmitting power from the driving disks to the driven disks is greatly increased and maintained at its maximum efiiciency forsubstantially the life of the belt. Furthermore, this efficiency is maintained even in the presence of oil, moisture, etc., which enables the transmission device to'be used in many places where it otherwise could not be-used. y

The disks 10, 12, may be the driving memher, and the disks 20, 21, the driven member, and the'speed of the latter can be regu- I may prefer to use the leather facings 33 and to extend the corks through them, in i which case the frictional efi'iciency of the leather is obtained in addition to that of the cork, but it is not desired to limit the invention in this respechas the leather facing may be omitted, as shown in Fig. 4. In either case; the slipping of the endless belt between the disks, either of the drivin or the driven. member, is avoided, and the e ciencyof the apparatus is greatly increased in normal or dry conditions of use,'and in abnor-. mal or wet conditions due to the presence of moisture or oil on the .disks, the apparatus is rendered eii'ective and its efliciency as a power transmitter is maintained.

Claims:

1. A power transmitting device compris ing an endless belt, and a series of blocks attached to said belt and provided with socket's in their opposite ends and with facing pieces of flexible fibrous material having holes in line with said sockets, and corks inserted into said sockets and extended through said facings substantially flush with the outer surface thereof, substantially as described. a

'2. power transmitting device comprising an endless belt and a series of contact ing members attached thereto and provided in their ends with sockets and inserts of cork extended into said sockets and forming part of the contacting surfaces of the ends of said members, substantiall as described.

3. A power transmitting evice com rising an endless belt and a series of b ocks attached thereto and provided in their ends -with' sockets and inserts of cork extended into said sockets and forming part of the contacting surfaces of the ends of said blocks, substantially as described. l

4. In a power transmitting apparatus, an endless belt and a series of blocks attached thereto and provided in their ends with sockets and inserts of cork extended into said sockets and forming part of the contacting surfaces of the ends of said blocks, substan tially as described. 1

5. A power transmitting device com rising an endless belt and a series of b ocks attached thereto and provided with sockets, and inserts of cork inserted into said sockets and forming part of the contacting surface of said blocks.

In testimony whereof, I have signed my name to this specification in the two subscribing witnesses.

WILLIAM WARING.

W'itnesses:

JAS. H. Gnuacnnin, J. MURPHY.

presence of 

